Network consolidation for virtualized servers

Abstract

Techniques are disclosed for virtualized server kernel and virtual networks consolidation. The network consolidation allows a data center to migrate from an infrastructure that uses multiple dedicated gigabit Ethernet Network Adapters to manage system virtualization and migration to an infrastructure using consolidated, redundant, 10 gigabit Ethernet adapters. Different priority classes may be defined for different classes of network traffic such as hypervisor management traffic, inter-host virtual machine migration traffic, virtual machine production traffic, virtualized switching control plane traffic, etc. Further, an enhanced transmission standard may be used to specify a minimum bandwidth guarantee for certain traffic classes. Thus, the hypervisor management and inter-host virtual machine migration traffic may be transmitted, even the presence of congestion.

Description

BACKGROUND[0001]1. Technical Field[0002]Embodiments described in this disclosure generally relate to techniques for managing servers running multiple virtual machines in a data-center environment. More specifically, embodiments described in this disclosure relate to virtualized servers kernel and virtual networks consolidation.[0003]2. Description of the Related Art[0004]Server virtualization technology allows multiple virtual machines to run concurrently on a single physical computing system. Currently, data center environments are used to create large clusters of such physical computing systems (commonly referred to as servers), where each server runs multiple virtual machines. This approach has led to data centers that can supply massive amounts of computing power. At the same time, the networking infrastructure to manage such a data center has grown ever more complex.[0005]From a networking perspective, server virtualization requires the use of several Network Interface Cards (N...

AI Technical Summary

Problems solved by technology

This approach has led to data centers that can supply massive amounts of computing power.

At the same time, the networking infrastructure to manage such a data center has grown ever more complex.

At the same time, each additional network interface increases the cost, cabling complexity, and energy consumption within the data center.

Further, each additional card generates heat which increases cooling requirements, also driving up the cost of running the data center.

However, VLANs do not provide any guarantee in terms of bandwidth to any particular quality of service classification.

This is because the physical NIC in the in the virtualized server is shared among competing traffic flows from different virtual machines, as well as the management traffic that enables the server virtualization functionalities, so the concept of traffic prioritization needs to be applied between the server itself and the switch, rendering VLANs alone insufficient.

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